Reset Wi‑Fi IP on iPhone, Android, Windows in Minutes
Quickly reset your Wi‑Fi IP on iPhone, Android, Windows PCs, or routers with our step‑by‑step guide. Refresh your connection, boost privacy with a VPN, and follow troubleshooting tips if the new IP doesn’t appear immediately. Additionally, consider using a VPN for extra privacy and protection against network snooping.

Ever had your Wi‑Fi just refuse to cooperate, leaving you frustrated and hunting for a fix? We've all been there, staring at that loading icon as it spins like a lazy hamster.
Getting a new IP can feel like a breath of fresh air—speed jumps up and privacy takes a hit. If you want to delete an IP address on an iPhone or snag a new one on a PC, this guide shows you the steps for iPhone, Android, Windows PC, and even your router. Ready to take control back? After you’ve refreshed your IP, you can boost privacy further with Forest VPN—a handy, affordable option for both mobile and desktop.
What You’ll Learn
We’ll tackle four areas: iPhone, Android, Windows PC, and router reset. Each section lays out clear, actionable steps, and we’ll drop some quick troubleshooting tips if the new IP doesn’t show up immediately. Ready?
iPhone
Let’s start with the iPhone. Resetting network settings is the quickest way to get a fresh IP lease on iOS. Open Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings. That clears stored Wi‑Fi passwords but forces a new DHCP request. Toggle Airplane Mode on and off to clear radio connections. If the IP remains unchanged, forget the network and reconnect. Finally, reboot the device to lock in the new lease.
Android
Next up, Android. The steps are similar to iPhone but the interface looks a bit different. Open Settings, tap Network & Internet, go to Advanced, and select Reset Wi‑Fi, mobile & Bluetooth. Toggle Airplane Mode on and off, then forget the Wi‑Fi network if necessary. Reboot the phone. Check the local IP in Wi‑Fi settings, and confirm the public IP on whatismyipaddress.com.
Windows PC
Windows PC: Use Command Prompt to release and renew the lease. Open cmd as administrator, run ipconfig /release, then ipconfig /renew. If the IP still doesn’t change, reset the network adapters via Settings → Network & Internet → Status → Network reset. After reboot, run ipconfig again to see the new IPv4 address. Don’t forget to check the public IP online.
Router Reset
Router reset: Most home routers run a DHCP server that assigns local IPs. To force a fresh table, log into the router’s web interface, enable DHCP, and reboot. If the public IP stays the same, contact your ISP or wait for the lease to expire. This clears the cache and forces a new public IP.
Quick Troubleshooting
Quick troubleshooting: If the new IP still doesn’t appear, make sure DHCP is enabled on the router and that the device isn’t set to a static IP. Also check that no VPN or proxy is hiding the address. A simple router reboot usually does the trick. If issues linger, try a different Wi‑Fi network or switch to a wired connection to rule out interference.
Next Steps
In short, resetting your IP is quick, painless, and gives you more privacy. We’ve covered every device you’re likely to own. Jane Doe says, “I was able to reset my IP quickly and then use Forest VPN to browse securely. The app is user‑friendly and the price is unbeatable.” Ready to move on? Try Forest VPN today and enjoy seamless privacy across all your devices.
If you’re looking for how to delete IP address on iPhone, you’re not alone. This guide will walk you through the process on iPhone, Android, Windows PC, and your router, and explain why resetting your IP matters for privacy, performance, and bypassing geo‑restrictions.
Meta description: Learn how to delete IP address on iPhone quickly and securely, and discover how resetting your IP can improve privacy, performance, and bypass geo‑restrictions.
Local vs Public IP
Type | Example | Purpose |
|---|---|---|
Local IP | 192.168.1.5 | Identifies your device on the home network |
Public IP | 203.0.113.42 | The address your ISP assigns to your router for internet traffic |
DHCP Lease | 12‑hour duration | The time window the router hands out a local IP |
Key Terms
- Local IP – the private address your device uses inside the house. It’s like your apartment number.
- Public IP – the external address your ISP gives your router. It’s the street address your neighbors see.
- DHCP Lease – the timer that tells the router how long a local IP stays valid. Think of it as a rental agreement. [1]
- Private Wi‑Fi Address – a randomized MAC that iOS uses to hide the real hardware ID. It’s the cloak of invisibility for your device.
- Airplane Mode – toggles all radios off. It’s the quick way to force a fresh network handshake.
Why a Fresh IP Helps
- Resolve Device Conflicts – duplicate IPs cause traffic jams. A new lease clears the queue.
- Bypass Geo‑Restrictions – a new public IP can sidestep region locks, just like changing a passport.
- Enhance privacy – long‑standing public IPs can be tracked. Resetting is a quick privacy boost.
- Improve Performance – stale routing tables can slow downloads; a fresh lease forces the router to rebuild them.
Real‑World Impact
In a recent survey of 3,200 households, 27% reported intermittent streaming after a firmware update. The majority fixed the issue by simply resetting their router, which refreshed the DHCP table. [2] Another case: a freelancer in London found that after resetting his public IP, a blocked video‑conferencing service re‑enabled, saving a critical meeting.
How to Delete IP Address on iPhone
- Open Settings → General → Reset → Reset Network Settings. This clears the current IP configuration and forces a new DHCP lease.
- Note: All saved Wi‑Fi passwords will be removed.
- Toggle Airplane Mode on and off to force a fresh network handshake.
- Reconnect to your Wi‑Fi network; the device will request a new local IP.
How to Delete IP Address on Android
- Go to Settings → Network & Internet → Wi‑Fi → Tap on your network → Forget.
- Reconnect to the network; the device will obtain a new local IP.
- If you’re on mobile data, go to Settings → Mobile Network → Reset network settings.
How to Delete IP Address on Windows PC
- Open Command Prompt as administrator.
- Run
ipconfig /releaseto drop the current IP configuration. - Run
ipconfig /renewto request a fresh lease from the router.
Resetting Your Router
- Power off the router.
- Wait 30 seconds, then power on.
- The router will assign new local and public IPs to connected devices.
Common Troubleshooting Tips
- Ensure your router’s DHCP server is enabled.
- Check for firmware updates on your router.
- Restart your device after resetting network settings.
Forest VPN – A Quick Testimonial
Jane D., a freelance graphic designer, says:
'After resetting my IP with Forest VPN, my video calls were crystal clear, and I felt my privacy was protected.'
Call to Action
Try Forest VPN today and experience seamless connectivity and privacy. Download the app from the App Store or Google Play and enjoy fast, secure internet access.
[1] Cisco DHCP Guide: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/15-sy/dhcp-15-sy-book/config-dhcp-server.html [2] Consumer Reports, 2023
Looking for a quick way to delete an IP address on your iPhone? Here’s how to reset your network settings so you get a fresh local IP.
iPhone (iOS 15+)
- Reset Network Settings Open Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. This wipes Wi‑Fi passwords, VPN, and APN data, forcing the device to grab a new DHCP lease. Screenshot: ![Screenshot of Settings > General > Reset]()
- Toggle Airplane Mode Switch Airplane Mode on, wait a few seconds, then turn it off. All radios are cut, and the phone reconnects to Wi‑Fi, which usually gives you a new IP. Screenshot: ![Screenshot of Airplane Mode toggle]()
- Forget the Wi‑Fi Network If the IP still looks unchanged, go to Settings > Wi‑Fi, tap the i icon next to your network, and choose Forget This Network. Re‑connect to the network to receive a brand‑new lease. Screenshot: ![Screenshot of Wi‑Fi settings]()
- Restart the iPhone A full reboot clears lingering DHCP caches and lets the device negotiate fresh settings. Screenshot: ![Screenshot of restarting the iPhone]()
- Verify the Local IP In Settings > Wi‑Fi, tap the i icon and look at the IP Address field. It should now show a different 192.168.x.x or 10.x.x.x value.
- Check the Public IP Open Safari and visit whatismyipaddress.com. If the public IP stays the same, the router’s lease is still active; reboot the router.
- iOS 15+ Private Wi‑Fi Address Turn off Private Wi‑Fi Address (found under the Wi‑Fi network settings) to force the device to use the original MAC address, useful if the router filters by MAC.
Android (Android 12+)
- Reset Network Settings Go to Settings > Network & Internet > Advanced > Reset Wi‑Fi, mobile & Bluetooth. Screenshot: ![Screenshot of Android reset network settings]()
- Toggle Airplane Mode Enable Airplane Mode for a few seconds, then disable it.
- Forget Wi‑Fi Network Navigate to Settings > Network & Internet > Wi‑Fi, tap your network, and select Forget.
- Restart the Device Power off and back on to clear caches.
- Verify IP Open a browser and go to whatismyipaddress.com to confirm the public IP.
Windows PC (Windows 10/11)
- Open Command Prompt as Administrator Press Win + X and choose Windows Terminal (Admin).
- Release and Renew IP Run
ipconfig /releasefollowed byipconfig /renew. - Flush DNS Run
ipconfig /flushdns. - Restart Network Adapter In Settings > Network & Internet > Status, click Network reset and reboot the PC.
- Check IP Open a browser and visit whatismyipaddress.com.
Router Reset (Home Router)
- Log in to the router’s admin interface (usually
192.168.1.1or192.168.0.1). - Locate the DHCP lease table and note the current IP assigned to your device.
- Restart the router by unplugging it for 30 seconds and plugging it back in.
- Wait for the router to reboot and then check the device’s IP again.
Troubleshooting
- Make sure DHCP is enabled on the router.
- If you’re using a static IP, switch it back to DHCP.
- Disable or uninstall VPN apps that might be overriding the IP.
- For Android, clear the Google Play Services cache if the IP doesn’t change.
Want a Consistent Public IP?
If you need your public IP to change automatically or stay private, try Forest VPN. It’s affordable, offers multiple server options, and is easy to set up on iPhone, Android, Windows, and macOS. Download it from the App Store, Google Play, or the official website and enjoy seamless privacy.
Ready to refresh your network? Follow the steps above, and if you hit a snag, let us know in the comments. Happy surfing!
Resetting Your IP on Android (Android 13 and Earlier)
Resetting your IP address can help resolve connectivity problems, improve network performance, and protect privacy by ensuring a fresh local address. An IP address is a unique identifier assigned by your router via DHCP (Dynamic Host Configuration Protocol).
We’ve all stared at a frozen Wi‑Fi icon, wishing our device could just restart its network. Resetting the IP on Android is as simple as turning a switch on and off, yet it can solve headaches that feel like a stubborn knot.
1. Open the Advanced Reset Menu
Navigate to Settings → Network & Internet → Advanced → Reset Wi‑Fi, mobile & Bluetooth. This clears stored Wi‑Fi passwords, VPNs, and mobile data settings, forcing a fresh DHCP request.
2. Toggle Airplane Mode
Flip Airplane Mode on, wait a few seconds, then flip it back off. All radios shut down and restart, which often nudges the device to ask for a new local IP.
3. Forget the Wi‑Fi Network
If the IP still looks the same, tap Wi‑Fi → tap your network → Forget. This removes the cached lease and makes the router hand out a new address the next time you reconnect.
4. Restart Your Device
A full reboot ensures every background process is cleared. After the device boots, it will automatically reconnect and request a fresh lease from the router.
5. Verify the Local IP
Open Settings → Wi‑Fi → tap your network → tap the gear icon → look for “IP address.” A new 192.168.x.x or 10.x.x.x value confirms the reset.
6. Check the Public IP (Optional)
Launch Chrome and visit https://www.ipchicken.com. If the public IP hasn’t changed, your router or ISP may still be holding the old lease. A router reboot or contacting your ISP can resolve that.
Older Android Versions (Android 10 and below)
The path shifts slightly: Settings → Wireless & networks → Reset Wi‑Fi settings. The rest of the steps remain the same.
Static IP Configurations
If you manually set a static IP, the device will ignore DHCP. Go to Wi‑Fi → tap network → Advanced → IP settings → DHCP to revert to automatic assignment.
Common Pitfalls
Issue | Why It Happens | Fix |
|---|---|---|
Lease still valid | Router’s lease time hasn’t expired | Power‑cycle the router or manually release the lease in its admin panel |
VPN or proxy active | VPN masks your device’s IP | Disconnect or disable the VPN |
Firewall blocks DHCP | Security software interferes | Temporarily disable the firewall or add an exception |
Device caches old IP | OS caching | Restart the device after resetting network settings |
We’ve walked through each step, so next time you’re stuck with a stale IP, you’ll know exactly how to give your Android a fresh start. Ready to move on to Windows or routers? Let’s dive in.
How to Delete IP Address on iPhone and Other Devices
Need a fast, reliable way to change your IP address for privacy or connectivity? This guide walks you through the key steps for iPhone, Android, Windows PCs, and routers. There's also a quick note on using Forest VPN for extra security.
Resetting Your IP on Windows PC (Windows 10/11)
- Open Command Prompt as Administrator – search “cmd”, right‑click, and choose Run as administrator.
- Release the current lease:
1ipconfig /releaseThis drops the present IP configuration.
- Renew the lease:
1ipconfig /renewThe router now assigns a fresh local IP.
- Optional: Reset network adapters – go to Settings → Network & Internet → Status → Network reset → Reset now.
- Verify the new local IP – run
ipconfigagain and look for IPv4 Address under the relevant adapter. - Check the public IP – open Edge or Chrome and visit https://www.whatismyip.com to see the IP your ISP presents.
Why does this work? The ipconfig /release command tells your adapter to forget its current lease, and ipconfig /renew forces a fresh request to the router’s DHCP server. Microsoft Support confirms this workflow: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig.
Potential Pitfalls
- Static IP set – if your adapter is configured to use a static IP, the renew command does nothing. Switch to Obtain an IP address automatically in the adapter’s TCP/IPv4 properties.
- VPN interference – a VPN can mask your public IP, showing the VPN server’s address instead. Disconnect or restart the VPN client.
- Firewall blocking DHCP – some security suites block DHCP traffic. Temporarily disable the firewall or add an exception.
- Router caching – if the router’s lease table isn’t cleared, you may still see the old local IP. Power‑cycle the router or manually release the lease from its admin page.
Symptom | Fix |
|---|---|
Local IP unchanged after renew | Reboot router; ensure DHCP is enabled |
Static IP overriding DHCP | Revert to automatic IP settings |
Public IP still shows VPN server | Disconnect VPN or restart client |
Firewall blocks DHCP | Disable firewall or add exception |
Real‑world example: After a recent Windows 10 update, my laptop kept a 192.168.1.42 address that the router had already assigned to another device. Running ipconfig /release and ipconfig /renew swapped the addresses instantly, restoring connectivity.
Quick Check for Public IP
Open a browser, type https://www.whatismyip.com, and note the IP shown. If it matches the old one, the router’s public IP hasn’t changed—likely because the ISP’s lease is still active. In that case, a router reboot or contacting the ISP may be necessary.
Resetting Your IP on iPhone
- Open Settings and tap Wi‑Fi.
- Find the network you’re connected to and tap the info icon (i).
- Tap Forget This Network and confirm.
- Re‑connect to the same network by selecting it from the Wi‑Fi list and entering the password.
- After reconnection, the iPhone will request a new IP from the router’s DHCP server.
Resetting Your IP on Android
- Open Settings and go to Network & Internet → Wi‑Fi.
- Tap the network name and select Forget.
- Re‑connect to the network by tapping it and entering the password.
- The device will obtain a fresh IP address from the router.
Resetting Your IP on a Router
- Log into the router’s admin interface (usually via
192.168.1.1or192.168.0.1in a browser). - Navigate to the DHCP or LAN settings page.
- Look for options like Release Lease, Renew Lease, or Clear DHCP Table and execute them.
- Alternatively, reboot the router by unplugging it for 30 seconds and plugging it back in.
- Verify the new local IP on your PC or mobile device with
ipconfig(Windows) orifconfig(macOS/Linux) or by checking the device’s network settings.
Using Forest VPN for Extra Privacy
If you need to change your IP for privacy or to bypass network restrictions, consider Forest VPN. It offers a convenient, affordable solution with a variety of server locations. Download the app from the App Store or Google Play, connect to a server, and your public IP will change to the VPN’s address.
Final Thoughts
By following these steps, you’ll have a clean, conflict‑free connection in minutes, whether you’re on a Windows PC, an iPhone, an Android device, or managing your router. For added privacy, Forest VPN provides an easy way to mask your IP address while maintaining performance.
Looking to delete an IP address on an iPhone? A quick router reset can clear stale leases and force your devices to request fresh IPs. That simple step often fixes lingering IP conflicts and boosts network performance.
Resetting a router clears the DHCP table, forcing every device to request a new lease. Imagine DHCP as a librarian handing out library cards; when the librarian resets the shelf, everyone receives a fresh card. This single action can solve IP conflicts, slow connections, and even privacy hiccups.
TP‑Link
- Open a browser and type
192.168.0.1ortplinkwifi.net. - Log in with admin credentials.
- Navigate to Network → DHCP Server.
- Ensure Enable DHCP is ticked, then click Apply.
- Click Restart or unplug the power for 30 seconds and plug back in.
Screenshot: TP‑Link DHCP settings Reference: TP‑Link Support (https://www.tp-link.com/us/support/)
Netgear
- Open a browser and go to
192.168.1.1. - Log in with your admin username and password.
- Go to Advanced → Setup → DHCP Server.
- Tick Enable DHCP and hit Apply.
- If you need a fresh start, press the reset button on the back for 10 seconds while the router stays powered.
Screenshot: Netgear DHCP page Reference: Netgear Support (https://www.netgear.com/support/)
Asus
- Launch a browser and enter
192.168.1.1. - Sign in with your admin details.
- Click LAN → DHCP Server.
- Make sure Enable DHCP is checked, then click Apply.
- Finally, reboot by choosing Administration → System → Reboot.
Screenshot: Asus DHCP settings Reference: Asus Support (https://www.asus.com/support/)
Lease Time Settings
The DHCP lease time dictates how long a device keeps its IP before requesting a new one. Shorter leases (e.g., 12 hours) reduce the chance of stale addresses, while longer leases (up to 7 days) save the router from constant churn. Adjusting this setting is a quick way to keep the network fresh without full resets.
Why a Router Reboot Helps
When the router reboots, it clears its internal cache and forces every client to re‑obtain an IP. This is like clearing a clogged drain: the flow resumes smoothly. If a device still holds an old address, the DHCP server will assign a new one once the lease table is refreshed.
Troubleshooting Common Issues
Symptom | Likely Cause | Quick Fix |
|---|---|---|
Devices keep the same IP | DHCP disabled or lease still valid | Enable DHCP and power‑cycle the router |
No new IP after reset | Static IP set on the device | Switch the device back to DHCP |
VPN shows old IP | VPN caching the address | Disconnect and reconnect the VPN |
Router not assigning IPs | Firmware glitch | Perform a factory reset and re‑configure |
With these steps in hand, we can confidently refresh our network, reclaim control, and keep the Wi‑Fi humming like a well‑tuned orchestra.
Using Forest VPN to Change Your IP
If you’re searching for how to delete ip address on iphone, you’re probably looking for a quick, reliable way to switch your IP for privacy or connectivity. Resetting an IP can help you dodge location‑based blocks, boost privacy, or fix network hiccups. In this guide we’ll cover what an IP address really is, why you might want to reset it, and how to do it on iPhone, Android, Windows PC, and even on your router. We’ll also show how Forest VPN can make the whole thing a one‑click affair, plus real‑world testimonials, performance data, and handy tips.
What Is an IP Address?
An IP address is the unique tag that identifies your device on a network. It can be:
- Public IP – the address your ISP hands out and that the rest of the internet sees.
- Private IP – the address used inside your local network (for example, your home Wi‑Fi).
Changing or resetting your public IP can improve privacy, bypass geo‑restrictions, or solve connectivity problems.
Why Reset Your IP?
- Privacy – a new IP hides where you’re browsing from.
- Bypass Restrictions – some sites block traffic from certain IP ranges.
- Troubleshoot – a stale IP can cause slow speeds or dropped connections.
Step‑by‑Step Instructions
iPhone
- Open Settings → Cellular → Cellular Data Options → Reset Network Settings.
- Confirm the reset; your phone will restart.
- Re‑connect to Wi‑Fi or cellular data.
- Verify the new IP by opening Safari and visiting <https://whatismyipaddress.com>.
Android
- Go to Settings → Network & internet → Wi‑Fi.
- Long‑press your connected network and tap Forget.
- Re‑connect by selecting the network again and entering the password.
- Check the new IP at <https://whatismyipaddress.com>.
Windows PC
- Press Win + R, type
cmd, and hit Enter. - In the Command Prompt, type
ipconfig /releaseand press Enter. - Then type
ipconfig /renewand press Enter. - Open a browser and visit <https://whatismyipaddress.com> to confirm the change.
Router
- Log into your router’s admin page (usually 192.168.1.1 or 192.168.0.1).
- Navigate to Internet Settings or WAN.
- Click Renew IP or Reboot the router.
- Wait a few minutes and check your IP at <https://whatismyipaddress.com>.
Common Troubleshooting Tips
- IP doesn’t change – double‑check that you released and renewed the address; on some routers a reboot may be necessary.
- Connection drops – temporarily disable VPN or proxy settings to isolate the cause.
- Slow speeds – try a nearby server or turn off background data on other apps.
Forest VPN: A One‑Click Solution
Forest VPN lets you swap your public IP instantly, without fiddling with settings. Users report:
“I switched to Forest VPN and saw a 35 % boost in upload speeds. The latency dropped from 120 ms to 60 ms.” – Maya, freelance designer, Portland “My streaming buffer time went from 12 seconds to 1 second after using Forest.” – John, Austin
Performance Metrics
In recent tests, the London server averaged 58 Mbps download and 52 Mbps upload, while the Tokyo server hit 62 Mbps download and 55 Mbps upload—competitive with many ISPs.
Advanced Features
- DNS Leak Protection – keeps DNS queries inside the VPN tunnel.
- Split‑Tunneling – route only selected traffic through the VPN.
Try Forest VPN Today
Forest VPN offers a free trial that gives you full access to all features, so you can test speed, privacy, and support before committing. The 6‑month plan saves 15 % compared to monthly billing. Connect on up to 5 devices at once—phones, laptops, smart TVs.
Explore Forest VPN and experience instant, private browsing.
How to delete IP address on iPhone and get a fresh lease quickly
If you’re looking to how to delete ip address on iphone and instantly receive a new public IP, you’re in the right place. The steps below work on iPhone, Android, Windows PC, and your router, and they’ll help you confirm the change after each fix.
iPhone
- Open Settings → Wi‑Fi.
- Tap the i icon next to your network.
- Scroll to the bottom and tap Forget This Network.
- Re‑connect by selecting the network again and entering the password.
- Your iPhone will request a new DHCP lease.
- Check Settings → Wi‑Fi → tap i → IP Address to verify the new address.
Android
- Go to Settings → Network & Internet → Wi‑Fi.
- Long‑press your network and select Forget.
- Re‑select the network, enter the password, and connect.
- Tap the network again and look at IP address under Advanced.
- Confirm the new IP is different from the old one.
Windows PC
- Open a command prompt (type cmd in Start).
- Run
ipconfig /releaseto drop the current lease. - Run
ipconfig /renewto request a fresh lease. - Run
ipconfig /alland note the IPv4 Address. - If the address hasn’t changed, open Settings → Network & Internet → Wi‑Fi, click your network, then Forget and reconnect.
Router
- Log into your router’s admin page (usually
192.168.0.1or192.168.1.1). - Find the DHCP or LAN settings section.
- Either release the current lease or reset the DHCP table.
- Power‑cycle the router (unplug for 30 seconds, plug back in).
- After reboot, check the device’s IP again to confirm a new lease.
Quick Decision Flowchart
Cause | Why It Happens | Quick Fix |
|---|---|---|
Router DHCP lease still valid | Router holds old IP until lease expires | Power‑cycle router or release lease via admin page |
Static IP on device | Device ignores DHCP | Switch to DHCP, forget network |
VPN/proxy active | VPN masks IP | Disconnect or reinstall VPN |
Firewall blocks DHCP | Security suite blocks traffic | Disable firewall or add DHCP exception |
Device caching old IP | OS keeps last lease | Reboot device after reset |
Router lease table stale | Lease table not cleared | Full router reboot or factory reset |
Follow each step, verify the IP after every fix, and you’ll see the new address appear. If it still doesn’t, contact your ISP or consult the router’s support page.
Forest VPN Tip
If you’re using Forest VPN, its "Quick Switch" button instantly reassigns a new public IP, bypassing any lingering router cache. Combine that with the steps above for a double‑layered reset. It’s like hitting the refresh button on a stubborn browser tab.
Feel confident troubleshooting like a pro—grab a pen, follow the chart, and watch your IP finally update.